<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body{
            margin: 0;
            height: 3000px;
        }
        .left{
            width: 200px;
            background-color: skyblue;
            position: fixed;
            left: 0;
            top: 110px;
            bottom: 0;
        }

        .right{
            width: 150px;
            background-color: yellow;
            position: fixed;
            top: 110px;
            right: 0; 
            bottom: 0;
        }

        .middle{
            background-color: tomato;
            min-height: 900px;
            margin-left: 220px;
            margin-right: 170px;
            margin-top: 110px;
            
        }
        .head{
            width: 100%;
            height: 100px;
            background-color: turquoise;
            position: fixed;
            top: 0;
            left: 0;
        }
    </style>
</head>
<body>
    <div class="head"></div>
    <div class="main">
        <div class="left"></div>
        <div class="middle"></div>
        <div class="right"></div>
    </div>
</body>
</html>